How to Implement a Simple Chatbot Using ChatGPT in a C# WinForms Application?

 

Here's a step-by-step guide to create a basic chatbot using ChatGPT in a C# WinForms application:

1. Set Up the Project:

   • Create a new C# WinForms App in Visual Studio.
   • Install System.Net.Http and Newtonsoft.Json via NuGet Package Manager.

2. Design the Form:

   • Add a TextBox for user input (txtUserInput).
   • Add a Button to send the message (btnSend).
   • Add a TextBox for displaying the chat conversation (txtChat), set its Multiline property to True.

3. Code Example:
   
   using System;
   using System.Net.Http;
   using System.Text;
   using System.Threading.Tasks;
   using System.Windows.Forms;
   using Newtonsoft.Json;
   
   namespace ChatGPTWinForms
   {
       public partial class Form1 : Form
       {
           private static readonly string apiKey = "YOUR_API_KEY_HERE";
           private static readonly string endpoint = "https://api.openai.com/v1/completions";
   
           public Form1()
           {
               InitializeComponent();
           }
   
           private async void btnSend_Click(object sender, EventArgs e)
           {
               string userInput = txtUserInput.Text;
               string response = await GetChatGPTResponse(userInput);
               txtChat.AppendText($"You: {userInput}\nChatGPT: {response}\n\n");
               txtUserInput.Clear();
           }
   
           private async Task<string> GetChatGPTResponse(string prompt)
           {
               using (var httpClient = new HttpClient())
               {
                   httpClient.DefaultRequestHeaders.Add("Authorization", $"Bearer {apiKey}");
   
                   var requestBody = new
                   {
                       model = "text-davinci-003",
                       prompt = prompt,
                       max_tokens = 150
                   };
   
                   var content = new StringContent(JsonConvert.SerializeObject(requestBody), Encoding.UTF8, "application/json");
   
                   try
                   {
                       var response = await httpClient.PostAsync(endpoint, content);
   
                       if (!response.IsSuccessStatusCode)
                       {
                           var errorResponse = await response.Content.ReadAsStringAsync();
                           throw new Exception($"API call failed with status code: {response.StatusCode}. Response: {errorResponse}");
                       }
   
                       var responseBody = await response.Content.ReadAsStringAsync();
                       dynamic result = JsonConvert.DeserializeObject(responseBody);
                       return result.choices[0].text;
                   }
                   catch (HttpRequestException e)
                   {
                       return $"Request error: {e.Message}";
                   }
                   catch (Exception e)
                   {
                       return $"General error: {e.Message}";
                   }
               }
           }
       }
   }
   
   This example creates a simple WinForms chatbot application where users can input text, send it to ChatGPT, and display the response.